Alert archive / Pennsylvania / Sullivan County

Weather alerts in Sullivan County, Pennsylvania, 2025

95 weather alerts in 2025, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Sullivan County and its neighbors

Each county as a circle sized by its count in 2025. Tap one for its archive.

Alerts
95
Warnings
19
Watches
17
Advisories
35
Busiest month
July16 alerts
Busiest day
July 14, 20259 alerts

Over time

By month

Warning verification

How often warnings here had a storm report inside them, and how much warning the reports had.

Sullivan County, 2025

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings5420%2100%37 min
Flash flood warnings4325%2100%60 min

Each office's whole area, 2025

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS State College, PA: tornado warnings14379%560%13 min
NWS State College, PA: severe thunderstorm warnings21212939%35489%22 min
NWS State College, PA: flash flood warnings783555%10594%77 min

An office's figures cover every county it serves, including across state lines.

Verified by the Iowa Environmental Mesonet's Cow, which matches each storm-based warning with the local storm reports inside its polygon while it was in force, within 15 km of its edge: a tornado warning counts as verified on a tornado report, a severe thunderstorm warning on hail of 1 inch or more, a gust of 58 mph or more, or wind damage, a flash flood warning on a flash flood report. The false alarm ratio is the share of warnings with no such report; "inside a warning" is the probability of detection, the share of reports that fell inside one; lead time runs from the warning's issue to each report inside it, counting zero for a report that came first. A warning with no report is not proof nothing happened: reports come from spotters, the public and damage surveys, and are thin where few people live.

The alerts

Every alert, in the order issued. Times are local, Eastern Time. Each opens its own page with the text, the map, the radar and the sounding.

IssuedProductOfficeLasted
Jan 1, 10:52 PM ESTSpecial Weather StatementCTP53 min
Jan 3, 5:10 PM ESTSnow Squall WarningCTP50 min
Jan 17, 2:21 PM ESTExtreme Cold WatchCTP37 hr
Jan 18, 2:37 PM ESTWinter Weather AdvisoryCTP42 hr
Jan 19, 3:38 AM ESTCold Weather AdvisoryCTP3 days
Jan 28, 7:16 AM ESTSnow Squall WarningCTP59 min
Jan 28, 1:20 PM ESTWind AdvisoryCTP28 hr
Jan 29, 11:21 AM ESTSnow Squall WarningCTP39 min
Jan 29, 12:00 PM ESTSnow Squall WarningCTP90 min
Jan 30, 3:35 AM ESTWinter Weather AdvisoryCTP29 hr
Feb 2, 1:58 PM ESTWinter Weather AdvisoryCTP13 hr
Feb 4, 2:22 PM ESTWinter Weather AdvisoryCTP46 hr
Feb 6, 4:00 AM ESTMesoscale DiscussionSPC5 hr
Feb 7, 1:06 PM ESTWinter Weather AdvisoryCTP38 hr
Feb 11, 2:59 PM ESTWinter Weather AdvisoryCTP37 hr
Feb 14, 4:20 AM ESTWinter Weather AdvisoryCTP53 hr
Feb 15, 2:33 AM ESTHigh Wind WatchCTP25 hr
Feb 16, 3:12 AM ESTHigh Wind WarningCTP37 hr
Feb 16, 3:12 AM ESTWind AdvisoryCTP37 hr
Feb 17, 2:59 AM ESTCold Weather AdvisoryCTP31 hr
Mar 5, 3:29 PM ESTAreal Flood AdvisoryCTP2 hr
Mar 6, 2:08 AM ESTWind AdvisoryCTP26 hr
Mar 8, 7:49 AM ESTSpecial Weather StatementCTP56 min
Mar 16, 2:49 AM EDTWind AdvisoryCTP15 hr
Mar 16, 2:07 PM EDTMesoscale DiscussionSPC53 min
Mar 16, 4:16 PM EDTSpecial Weather StatementCTP29 min
Mar 16, 4:26 PM EDTMesoscale DiscussionSPC94 min
Apr 15, 12:08 PM EDTMesoscale DiscussionSPC3 hr
Apr 15, 12:20 PM EDTSpecial Weather StatementCTP25 min
Apr 19, 4:04 PM EDTSevere Thunderstorm WarningCTP24 min
Apr 19, 4:07 PM EDTSpecial Weather StatementCTP23 min
Apr 27, 2:00 AM EDTWind AdvisoryCTP15 hr
Apr 29, 3:26 PM EDTSevere Thunderstorm WatchSPC6 hr
Apr 29, 7:50 PM EDTSevere Thunderstorm WarningCTP55 min
May 2, 5:42 PM EDTMesoscale DiscussionSPC2 hr
May 6, 10:54 AM EDTFlood WatchCTP12 hr
May 6, 12:01 PM EDTMesoscale DiscussionSPC119 min
May 6, 1:06 PM EDTSevere Thunderstorm WatchSPC6 hr
May 6, 2:43 PM EDTMesoscale DiscussionSPC92 min
May 6, 4:37 PM EDTMesoscale DiscussionSPC83 min
May 19, 3:34 AM EDTFrost AdvisoryCTP28 hr
May 31, 3:19 AM EDTAreal Flood WarningCTP3 hr
Jun 5, 1:50 PM EDTMesoscale DiscussionSPC115 min
Jun 5, 5:32 PM EDTMesoscale DiscussionSPC88 min
Jun 9, 4:00 AM EDTFlood WatchCTP24 hr
Jun 12, 4:57 PM EDTMesoscale DiscussionSPC2 hr
Jun 19, 12:44 PM EDTMesoscale DiscussionSPC91 min
Jun 19, 6:49 PM EDTSevere Thunderstorm Warning Considerable damage threatCTP56 min
Jun 21, 3:02 AM EDTHeat AdvisoryCTP5 days
Jun 26, 12:36 PM EDTFlood WatchCTP10 hr
Jun 28, 10:51 AM EDTMesoscale DiscussionSPC114 min
Jun 28, 11:48 AM EDTSevere Thunderstorm WatchSPC8 hr
Jun 28, 2:33 PM EDTMesoscale DiscussionSPC87 min
Jun 28, 3:17 PM EDTSevere Thunderstorm WarningCTP43 min
Jun 30, 12:07 PM EDTMesoscale DiscussionSPC113 min
Jun 30, 3:06 PM EDTSevere Thunderstorm WarningCTP39 min
Jul 2, 5:12 AM EDTDense Fog AdvisoryCTP4 hr
Jul 3, 12:57 PM EDTMesoscale DiscussionSPC2 hr
Jul 3, 1:30 PM EDTSevere Thunderstorm WatchSPC7 hr
Jul 13, 10:32 AM EDTFlood WatchCTP14 hr
Jul 13, 1:23 PM EDTMesoscale DiscussionSPC3 hr
Jul 13, 10:03 PM EDTFlash Flood WarningCTP5 hr
Jul 13, 11:21 PM EDTFlash Flood WarningCTP4 hr
Jul 14, 2:22 AM EDTFlood WatchCTP17 hr
Jul 14, 3:25 AM EDTAreal Flood WarningCTP11 hr
Jul 14, 8:09 AM EDTAreal Flood WarningCTP6 hr
Jul 14, 1:20 PM EDTMesoscale DiscussionSPC2 hr
Jul 14, 1:23 PM EDTFlash Flood WarningCTP3 hr
Jul 14, 1:42 PM EDTFlash Flood WarningCTP3 hr
Jul 14, 4:24 PM EDTAreal Flood WarningCTP8 hr
Jul 16, 12:03 PM EDTFlood WatchCTP12 hr
Jul 30, 2:19 PM EDTFlood WatchCTP29 hr
Aug 25, 5:12 AM EDTDense Fog AdvisoryCTP4 hr
Sep 7, 1:12 PM EDTFrost AdvisoryCTP19 hr
Sep 23, 9:57 PM EDTDense Fog AdvisoryCTP12 hr
Sep 25, 11:14 PM EDTDense Fog AdvisoryCTP10 hr
Oct 1, 12:35 AM EDTFrost AdvisoryCTP32 hr
Oct 8, 2:15 AM EDTFreeze WatchCTP23 hr
Oct 9, 1:41 AM EDTFreeze WarningCTP31 hr
Oct 30, 12:46 PM EDTWind AdvisoryCTP35 hr
Nov 4, 1:08 PM ESTHigh Wind WatchCTP13 hr
Nov 4, 1:08 PM ESTWind AdvisoryCTP39 hr
Nov 9, 3:31 AM ESTDense Fog AdvisoryCTP5 hr
Nov 15, 12:39 PM ESTWind AdvisoryCTP31 hr
Nov 30, 1:07 PM ESTWinter Storm WatchCTP25 hr
Dec 1, 1:57 AM ESTWinter Weather AdvisoryCTP44 hr
Dec 2, 9:51 AM ESTMesoscale DiscussionSPC3 hr
Dec 9, 1:28 AM ESTWinter Weather AdvisoryCTP3 days
Dec 18, 1:47 AM ESTWind AdvisoryCTP46 hr
Dec 22, 5:50 PM ESTWinter Weather AdvisoryCTP18 hr
Dec 24, 2:17 AM ESTWinter Storm WatchCTP36 hr
Dec 25, 2:15 PM ESTWinter Weather AdvisoryCTP41 hr
Dec 27, 12:09 PM ESTWinter Weather AdvisoryCTP40 hr
Dec 28, 12:49 PM ESTWind AdvisoryCTP51 hr
Dec 28, 9:56 PM ESTDense Fog AdvisoryCTP10 hr

By product

Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force nowTornadoes on recordForecastThe radar archive20242026

Sources

National Weather Service watches, warnings, advisories and statements from the Iowa Environmental Mesonet's VTEC archive, which reconstructs tornado, severe thunderstorm, flash flood and marine warnings back to 1986 from the NWS text archive. Storm Prediction Center watches and mesoscale discussions from SPC's archive through the Mesonet. County centers from the US Census Bureau. Warning verification from the Mesonet's Cow. Rebuilt daily.